Negative overload resistant oil supply device

Abstract

The utility model belongs to the field of aircraft fuel systems, and relates to an anti-negative overload oil supply device which comprises an oil tank, an oil delivery pipe connector is arranged at the top of the oil tank, an oil supply pipe connector is arranged on the side face of the oil tank, an oil suction pipe is arranged in the oil tank, and an oil outlet of the oil suction pipe is communicated with the oil supply pipe connector. Due to the fact that the three partition plates are distributed on the periphery of the oil suction port in the oil tank, air can be effectively prevented from entering the oil suction port. Therefore, the negative overload resistant small box can still supply oil continuously under the negative overload condition, and the negative overload resistant oil supply capacity is high.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft fuel systems and relates to a fuel supply device that resists overload. Background Technology

[0002] The primary function of an aircraft's fuel system is to meet the continuous fuel supply requirements of the engine. For aircraft requiring high maneuverability or even inverted flight, certain negative overloads and significant shaking may occur during flight, causing the fuel tank's bottom intake to detach from the fuel surface, resulting in fuel supply interruption and affecting flight safety. Therefore, aircraft fuel systems must be designed to withstand negative overloads, with the negative overload-resistant fuel tanks capable of continuous fuel supply during periods of negative overload, demonstrating strong resistance to negative overloads.

[0003] Commonly used methods for overload-resistant fuel supply include rotary fuel samplers, elastic bags, and dual-head pumps. Rotary fuel samplers allow the fuel intake to rotate around an axis in the pitch or roll direction during maneuvering flight, ensuring continuous fuel supply and providing strong overload resistance. However, they are generally large, limiting their installation on aircraft with limited space. Elastic bags achieve continuous fuel supply during maneuvering by isolating the fuel in the tank from air, offering strong overload resistance, but they are expensive and have a limited lifespan. Dual-head pumps require only one intake port to continuously supply fuel, providing strong overload resistance, but their complex structure, high cost, and continuous electrical power supply during operation place a significant burden on the electrical system and pose certain risks.

[0004] Therefore, the currently used anti-overload oil supply devices have shortcomings in terms of limited installation space and high production costs. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of current aircraft overload resistance fuel supply devices, such as limited installation space and high production costs. This utility model proposes an overload resistance fuel supply device with simple structure, low cost, strong overload resistance fuel supply capability, and can be directly installed in the aircraft fuel tank compartment without being limited by installation space.

[0006] The technical solution of this utility model:

[0007] An anti-overload oil supply device includes an oil tank, an oil delivery pipe joint is provided on the top of the oil tank, an oil supply pipe joint is provided on the side of the oil tank, an oil suction pipe is provided inside the oil tank, the oil outlet of the oil suction pipe is connected to the oil supply pipe joint, and several baffles are provided around the oil suction port of the oil supply pipe joint.

[0008] Furthermore, the fuel line connector 2 is connected to the fuel line of the aircraft's fuel tank compartment.

[0009] Furthermore, fuel supply pipe connector 3 is connected to the aircraft's fuel supply line to supply fuel to the engine.

[0010] Furthermore, the fuel tank is equipped with support feet.

[0011] Furthermore, there are four support feet, which are located on the side of the fuel tank.

[0012] Furthermore, the support feet are provided with threaded holes for fixing the fuel tank into the aircraft's fuel tank compartment using screws.

[0013] Beneficial effects of this utility model

[0014] This invention proposes an anti-overload fuel supply device. Inside the fuel tank, three baffles are distributed around the fuel intake, effectively preventing air from entering. Therefore, the anti-overload tank can continue to supply fuel even under overload conditions, demonstrating strong anti-overload fuel supply capability. Furthermore, the anti-overload tank has four external support legs, allowing it to be directly fixed to the aircraft's fuel tank compartment with screws, without being limited by installation space.

[0015] This invention, by employing the aforementioned technical approach, enables aircraft fuel systems to possess strong overload resistance capabilities. Simultaneously, it solves the problems of high production costs and limited installation space associated with current aircraft fuel system overload resistance fuel supply devices. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the anti-overload oil supply device;

[0017] Figure 2 It is an internal structural component of the anti-overload oil supply device. Detailed Implementation

[0018] This utility model proposes an anti-overload oil supply device, the external structure of which is as follows: Figure 1 As shown, it mainly consists of a fuel tank 1, a fuel supply pipe connector 2, a fuel supply pipe connector 3, and four support feet 4. The fuel tank 1 is used to store fuel. The fuel supply pipe connector 2 is installed on the top of the fuel tank 1 and is used to connect to the fuel supply pipe of the aircraft's fuel tank compartment. The fuel supply pipe connector 3 is installed on the rear end of the fuel tank 1 and is used to connect to the aircraft's fuel supply line to supply fuel to the engine. The four support feet with threaded holes are installed on the side of the fuel tank 1 and are used to fix the fuel tank 1 in the aircraft's fuel tank compartment with screws, without occupying the external space of the aircraft's fuel tank compartment.

[0019] This utility model proposes an anti-overload oil supply device, the internal structure of which is as follows: Figure 2As shown, it mainly includes partition 5, partition 6, partition 7, and fuel suction pipe 8. Fuel suction pipe 8 is used to draw fuel from fuel tank 1 and supply it to the engine through fuel supply pipe connector 3 and external fuel supply line; partition 5, partition 6, and partition 7 are respectively installed around fuel suction pipe 8, which can effectively prevent air from entering fuel suction pipe 8 when the aircraft enters negative overload flight, ensuring continuous fuel supply.

[0020] During refueling of the aircraft, the fuel supply pipe connector 2 is installed on top of the fuel tank 1 to ensure that the fuel tank 1 is full of fuel after refueling. During normal flight, fuel is continuously supplied to the engine through the fuel intake pipe 8, the fuel supply pipe connector 3, and the external fuel supply line. Fuel in the aircraft's fuel tank compartment enters the fuel tank 1 through the fuel supply pipe and the fuel supply pipe connector 2, ensuring that the fuel tank 1 is always full of fuel before the aircraft enters negative overload flight. When the aircraft enters negative overload flight, air begins to enter the fuel tank 1 through the fuel supply pipe connector 2. Baffle 1 5, Baffle 2 6, and Baffle 3 7 are respectively installed around the fuel intake pipe 8, which can effectively prevent air from entering the fuel intake pipe 8 and ensure continuous fuel supply. The anti-overload box structure described in this invention is simple, low-cost, and not limited by installation space, and has a strong anti-overload capability. The above schematic diagram is only for illustrative purposes. The size of the fuel tank, the position of the fuel intake pipe, the number of internal baffles and their installation positions can be determined according to different needs.

Claims

1. An anti-overload oil supply device, characterized in that, The system includes an oil tank, with an oil delivery pipe connector on the top and an oil supply pipe connector on the side. An oil suction pipe is installed inside the oil tank, with the oil outlet of the suction pipe connected to the oil supply pipe connector. Several baffles are installed around the oil suction port of the oil supply pipe connector.

2. The anti-overload oil supply device according to claim 1, characterized in that, The fuel line connector (2) is connected to the fuel line of the aircraft's fuel tank compartment.

3. The anti-overload oil supply device according to claim 1, characterized in that, The fuel supply pipe connector (3) is connected to the aircraft's fuel supply line to supply fuel to the engine.

4. The anti-overload oil supply device according to claim 1, characterized in that, The oil tank is equipped with support feet.

5. The anti-overload oil supply device according to claim 4, characterized in that, The aforementioned support feet are four in number and are located on the side of the fuel tank.

6. The anti-overload oil supply device according to claim 4, characterized in that, The support feet are provided with threaded holes for fixing the fuel tank into the aircraft's fuel tank compartment with screws.

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